Without opening a Leaf pack, you can charge it when you have a 12V source, a multi-voltage power supply with PFC, lightbulbs (I like the appliance bulbs that I rescue from dead microwaves) or power resistors and the plugs that go on the battery: the round control plug and one of the HV plugs. - find the contactor coil connection points on the round control plug and wire the main + and - contactor coils to 12V => WARNING! this will send the battery High Voltage to the HV plugs without any other safety than the 225A fuse in the Emergency Disconnect!!! - verify that the PFC front end of the power supply generates about 380V on the largest high voltage capacitor when connected to the grid - add 1 or more lightbulbs or power resistors between the high voltage capacitor and the HV plug for the battery - verify that the HV from the pack has the same polarity as how you connect the power supply - plug everything in and let lightbulbs or power resistors limit the current draw and drop the difference in voltage. For example, when charging a 200v Prius battery, use 2 lightbulbs in series to drop the 180v difference. WARNING! the PFC does not provide isolation, so the 380 Volts power is directly connected to the AC power grid. Also, avoid overloading the power supply, for example a 150W power supply will start struggling to give you 1/2 amp out of its PFC, so with 30W appliance bulbs, be careful with using 2 in parallel, each will carry about 1/4 amp when there is 120v across them. But when charging a low Leaf pack, its voltage will be over 300v so the drop across the bulbs is less than 80v and 2 parallel to speed up charging is fine. I used this exact method when a test with a DC fast charger failed and the Leaf remained connected and powered despite the battery being empty until it dipped below 250v and shut off hard and would no longer charge even at level 2 because it prevented its contactors from closing. So, I crawled under the car and did the manual charge as above for an afternoon, then it had enough charge to start a level 2 charge normally. Cor.
On Tue, Jun 18, 2024 at 9:56 PM redscooter via EV <ev@lists.evdl.org> wrote: > > I have a very weak leaf 24 kw ad no to charge test/it? I want to > charge a the whole bateery. > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20240619/f9de6f08/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
